The Tempest (48")

A storm rages accross the battlefield, extending
48" from the wizard in all directions. All enemy
units within this radius must pass a LD test on
2d6 before they can move or charge. Flying
creatures are forced down to the ground
(creatures flying high must land teir table edge)
and may not fly while tempest lasts. All missle
fire is at -2 to hit. War engines and buildings
suffer 1d6 S7 hits each subsequent magic phase.
Line of sight is not required. Remains in play.